Frankie Valli is a U.S. vocalist known for his distinctive falsetto as lead singer of The Four Seasons, who had major hits like “Sherry,” “Working My Back to You” and “Who Loves You.” Valli is a successful solo artist as well with singles like “Can’t Take My Eyes Off of You” and “Grease.”

Considered one of the greatest boxers of all time, Sugar Ray Robinson held the world welterweight title from 1946 to 1951, and by 1958, he had become the first boxer to win a divisional world championship five times.

Italian diplomat Niccolò Machiavelli is best known for writing The Prince, a handbook for unscrupulous politicians that inspired the term "Machiavellian" and established its author as the "father of modern political theory."